In 1979, When Rodrigo Carvalho was nine years old, his mother took him to Rio De Janeiro’s largest outdoor market, Feira Nordestina, where more than 600 vendors from Brazil’s Northeast region came to sell their wares. These include food, folk medicine, handicrafts—and cages upon cages of wild animals. “I very much remember the snakes, because I was always fascinated by snakes,” Carvalho says. “But there were turtles and monkeys and thousands of birds.” Wildlife trafficking in Brazil happens mostly out of sight these days, but it remains a widespread problem….